ABHISHEK KUMAR

Designed and developed end-to-end features across React.js, Node.js, Java and backend microservices, taking ownership of 5+ major services, improving feature rollout speed by 30%. Built and integrated RESTful APIs and Microservices, improving system modularity and reducing inter-service dependencies by 25%. Developed notification service by collaborating with frontend, backend, QA, and product teams for requirement gathering, template creation, and integrations (push/email notifications), resulting in 20% faster customer notifications. Migrated API calls from legacy systems to modern authentication frameworks and converted testing suites from Enzyme to React Testing Library, improving test reliability by 35%. Built dashboard metrics and monitoring tools for image attachment and refund services, enabling real-time operational insights and reducing manual error checks by 40%. Created Lambda services with SNS/SQS to automate bulk image downloads from DynamoDB, improving processing efficiency by 50%. Implemented CRUD APIs and Java-based microservices for backend functionality, enhancing system performance and reducing request latency by 30%. Enhanced React-based UI components, improving user experience and reducing frontend load times by 25%. Utilized AWS services (EC2, S3, Lambda, DynamoDB, CloudWatch) to deploy scalable cloud services and automate workflows, reducing manual interventions by 40%. Wrote unit and integration tests using Jest, Mockito, JUnit, increasing code coverage to 90%+ and reducing production bugs by 30%.